• Bryan Johnson

    I got my sperm DNA measured, a fertility and age marker

    My test result was 16%.
    <15% is peak 20s fertility.
    > 25% increased risk of failed pregnancy

    60% of 60 yr olds have crossed 25%.

    Here's how to test and what to do.

    Test:
    I used SCSA Diagnostics for the test.

    What

    Tweet media